If you own a Nissan 370Z or Infiniti G37 and you're looking to get more out of that VQ37VHR engine, 370Z test pipes are one of the most impactful bolt-on modifications you can make. They're affordable, relatively straightforward to install, and the difference in sound and exhaust flow is immediately noticeable.

This post breaks down what test pipes actually do, why they're a popular first mod on the VQ37 platform, and which options are worth your money.

What Are Test Pipes?

Test pipes are straight-pipe replacements for your factory catalytic converters. On the 370Z and G37, the stock exhaust setup runs cats in the mid-pipe section that restrict exhaust flow — they were designed to meet emissions standards, not maximize performance.

Test pipes delete those catalytic converters entirely and replace them with a straight section of pipe. The result is less backpressure, more exhaust flow, and a significant change in sound.

What Do Test Pipes Do for Your 370Z or G37?

• Improved exhaust flow. The stock cats are a notable restriction point in the VQ37 exhaust system. Removing them allows exhaust gases to exit faster and more freely, which supports power gains especially when paired with other mods like an intake or tune.
• More aggressive sound. This is what most people are after. Test pipes open up the exhaust note considerably — the VQ37 has a naturally great sound and test pipes let it breathe. You'll hear more of the engine's character at every RPM.
• Weight reduction. Catalytic converters are heavy. Test pipes are a simple straight pipe, so you're dropping a few pounds off the exhaust system in the process.
• Better pairing with other mods. If you're running an intake, headers, or planning a tune down the road, test pipes compound those gains. They're a strong foundation mod for any VQ37 build.

Resonated vs Non-Resonated — What's the Difference?

This is one of the most common questions when shopping 370Z test pipes, and it matters depending on what you want out of the car.

Non-resonated test pipes are a straight pipe with no dampening. Maximum sound, maximum drone on the highway. Great for track builds or if you want the loudest possible setup.

Resonated test pipes include a small resonator in the pipe that takes the edge off without killing the tone. You still get the open exhaust sound and the performance benefits, but the highway drone is significantly reduced. For a daily driver or a car you're going to live with every day, resonated is almost always the better call.

Our Picks for the Best 370Z / G37 Test Pipes

The 370Z and G37 Share More Than You Think

The Nissan 370Z and Infiniti G37 are closer under the skin than most people realize. Both cars are built on the same FM platform, powered by the same VQ37VHR engine, and share a nearly identical exhaust layout from the headers back. That's not a coincidence — Nissan and Infiniti engineered these platforms in parallel, which means aftermarket parts developed for one translate directly to the other.

For G37 owners shopping for test pipes, this is good news. You're not limited to a narrow pool of G37-specific parts — the entire 370Z aftermarket is essentially available to you. At Chaser Automotive, both our Resonated Test Pipes and the Kents Test Pipes are designed with this cross-platform compatibility in mind, fitting the 370Z and G37 seamlessly without modification. Whether you're in a coupe, sedan, or convertible G37, you're working with the same exhaust setup and the same upgrade path.

Final Thoughts

Test pipes are one of the best value mods you can do on a 370Z or G37. The cost is low relative to the impact, installation is manageable for anyone with basic mechanical ability or a trusted shop, and the sound difference alone makes the car feel like a different machine.

If you want something you can live with daily, go resonated. If you want maximum volume, go non-resonated. Either way, the VQ37 rewards the upgrade.

Browse both options at Chaser Automotive and find the right fit for your build.